Refrigerating system



Feb. 5, 1929.

G. W. MASON REFRIGERATING SYSTEM Filed April 5, 1926 ame/tou I e Www &Menu-o Patented Feb. 5, 1929.'

UNITED STATES PATENT OFFICE.

GEORGE W. MASON, OF- DETROIT, MICHIGAN, ASSIGNOR 'I'O COPELAN D PRODUCTS, ING., OF DETRQET, MICHIGAN, A CORPORATION OF MICHIGAN.

REFRIGERATING SYSTEM.

Application filed April 3, 1926. Serial No. 39,633.

This invention relates in particular to refrigerating systems wherein the expansion valve, brine tank, or thermostatic control is located inside of a' refrigerator cabinet in :n inaccessible position.

The object of this invention is to make it possible to adjust such elements of the system without removing them from the refl-igcrated chanher and without'the use of special service tools for reaching inaccessible places.

A further object of this invention is to make it easy for a service man to effect such adjustments as are required without disturbing the operation of the system. A still further object is to make it possible to remove the key or wrench used for -such adjustment in order to prevent inexperenced persons from attempting adjustments with which they are not familiar.

With these and other objects in View, my invention consists in the arrangement, combination and construction of the various parts of my improved device, as described in the specification, claimed in my claims and shown in the accompanying drawing, in which:

The single figure is a vertical section of a refrigerator cabinet, the mechanism employed therewith, being shown in elevation.

I have shown a refrigerator cabinet 5 having removable door or closure G on the top thereof., Mounted on the closure 6 are the condenser 7, compressor 8 and motor 9. The motor operates the compressor to deliver refrigerant to the condensing coils in the conventional manner. Within the refrigerator cabinet is a conventional brine tank 10 which is conventionally connected with the condenser 7 and the compressor 8.

The piping 11 which connects the coils in the brine tank 10 with the condenser 7 is pro'- Vided with an expansion valve housing 12, having an adjusting screw 13 therein.

The closure 6 is provided with a suitable opening through which a rod 14 extends, said rod having a squared end 15 on the outside of the refrigerator cabinet for the purpose of re'ceiving a wrench, and having a tapered end 16 within the refrigerator cabinet for the purpose of engaging the screw 13. Thus, the screw 13 may be adjusted to any desired position from without the refrigerator cabinet. The exact Construction of the expansion valve 12 has not been shown here, inasmuch as it is of no particular consequence to my invention other than that there bo some means which may be acted upon by the rod extending outside the casing for adjusting the valvc. A valve similar to that in United States Patent No. 1,455A3O might be used, but the construction shown therein is mentioned purely for the purpose of illustration.

Extending into the brine tank 10 through a tubing 18 is a tube 19 having a bulb 20- on one end thereof within the brine tank and connected at theother end thereof to an electric switch diagrammatically illustrated at 21, said switch being connected through wires 22, 23 and 24 with the motor 9 and a suitable source of electric power. The tube 18 is connected at one end with the brine tank 10 and extends through the closure 6, being provided atthe other end with screw threads 25 on which a cap 26 is screwed.

Thus, by merely removing the cap 26, additional brine may be placed in the tank, or the thermostat removed.

It will be obvious that various changes may be made in the arrangement, eombination and Construction of the various parts' of my improved device without departing from the spirit of my invention, and it is my intention to cover by my claims such changes as may be included within the scope thereof.

What I claim is:

1. In a refrigerator mechanism, a cabinet, a heat absorber within said cabinet, a heat dissipator on the outside of said cabinet. operatively connected to said heat absorber, a tank surrounding said heat absorber, a filler tube for said tank projecting through a wall of said cabinet, control mecahnism for said heat dssipator on the outside of said cabinet, actuating means for said control mechanism located on the inside of said cabinet, and a i connection between saidcontrol mechanism and said actuating means extending through said filler tube.

2. In a refrigerator mechanism, a cabinet, a brine tank within said cabinet, a cooling element in said brine tank, a compressor and condenser outside of said cabinet operatively connected to said cooling element, a motor for driving said compressor, a switch outside of said cabinet for controlling said motor, a thermostatic element within said cabinet for controlling said switch, a connection between said thermostatic element and said switch,

and a fillertube for said brine tank extending p through a wall of said cabinet andprovidin a passageway for said connection through sei wall. v 3. In a refrigerating mechanisrn, e cabinet provided with a movable wall, a brne tenk supported on the inside of said wall, an expansion element in said tenk, a compressor and condenser supported on the outside of said wall operativeiy connected to seid expension element, a prime mover for sad compressor, a control device for said prme mover supported on the outside of said cabnet, an

actuating device for said control device located in said brne tank, a connection between said control and act-miting devices, and a tube connected with said brine tank extending through said wall wherebysaid brine `tenk may be filled from the outsde of sad wall, said tube forming a passageway for said connection through said wall, and said actuating device and connection being removable from said cabinet through said tube.

' 4. In a refrigerating mechanism,-a cabinet provided with a wall, a tank within said cabinet, a tube connected to said tank and extending through said wall for the pur ose of fill- 'ing'said tank from'the exterior o said wall,

through said tube, and means embracin said connection for sealing the outer end -o said GEORGE W. MASONf v tube. 

